Skip to main content

G4C04:What sound is heard from an audio device experiencing RF interference from a CW transmitter?

G4C04G4C

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

Direct answer summary (2023-2027 NCVEC pool)

The official correct answer for G4C04 is On-and-off humming or clicking.

The key fact is On-and-off humming or clicking. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.

← G4C03G4C05 →

More questions in G4C

G4C01Which of the following might be useful in reducing RF interference to audio frequency circuits?G4C02Which of the following could be a cause of interference covering a wide range of frequencies?G4C03What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?G4C05What is a possible cause of high voltages that produce RF burns?G4C06What is a possible effect of a resonant ground connection?G4C07Why should soldered joints not be used in lightning protection ground connections?